Reflection, refraction, diffraction

Front

What is reflection in terms of light waves?

Back

Reflection is the bouncing back of light waves when they hit a surface.

Front

What is refraction?

Back

Refraction is the bending of light waves as they pass from one medium to another, changing speed.

Front

What is diffraction?

Back

Diffraction is the spreading out of light waves when they pass through a narrow opening or around obstacles.

Front

What happens to light when it strikes a smooth surface?

Back

It reflects in a predictable manner, following the law of reflection.

Front

What is the law of reflection?

Back

The angle of incidence is equal to the angle of reflection.

Front

Why does a pencil appear broken when placed in water?

Back

Because light bends (refracts) when it passes from air into water.

Front

What is the difference between reflection and refraction?

Back

Reflection involves bouncing back of light, while refraction involves bending of light.

Front

What is absorption in the context of light?

Back

Absorption is when light waves are taken in by a material and not reflected or transmitted.

Front

What is the reason we see grass as green?

Back

Grass reflects green light and absorbs other colors.

Front

What is a real-life example of diffraction?

Back

The spreading of light when it passes through a narrow slit, like light patterns created by a CD.